Connection device and through passage assembly and vehicle comprising same

Abstract

The present application relates to a connecting device for connecting a through passage's folding shed to a vehicle body end wall, a through passage assembly comprising the connecting device and a vehicle. The connecting device comprises a plurality of connecting pieces, a clamping frame configured to clamp the folding shed and a plurality of locking pieces. One end of each connecting piece is connected to the vehicle body end wall, and the other end is provided with a connecting portion; the clamping frame is provided with a plurality of through holes distributed circumferentially, and a plurality of connecting pieces pass through the through holes one by one to expose the connecting portion on the side of the clamping frame away from the vehicle body end wall; each locking piece is connected to the corresponding connecting portion from the side of the clamping frame away from the vehicle body end wall. The connecting device of the present application can bear the axial force and radial force from the clamping frame through the connecting pieces, and the locking pieces can share a part of the axial force from the clamping frame, avoiding the fracture of the locking pressing sheet and the wear of the clamping frame in the prior art, and achieving the functional requirements of quick locking and opening.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle passageways, and more particularly to a connecting device for connecting a passageway to a vehicle body end wall, a passageway assembly including the connecting device, and a vehicle including the connecting device or the passageway assembly. Background Technology

[0002] Some vehicles (such as railcars) have two or more carriages. A connecting passageway, as an important component of the connection between carriages, is installed at the junction of the end walls of adjacent carriages, serving as a link and transition, providing passengers with a safe and comfortable passageway. When the connecting passageway is connected to one of the two adjacent end walls using a connecting device, the device attaches the clamping frame of the folding canopy to the end wall, achieving a seal between the folding canopy and the end wall. This allows the folding canopy, together with the steps, ceiling, and side walls of the connecting passageway, to form a safe passage between the two adjacent carriages, protecting passengers.

[0003] In existing technologies, the connection between the folding canopy and the end wall of the vehicle body is typically secured using a locking clamping method, such as... Figure 1 As shown, multiple pressure plate supports 2' are welded at intervals on the connecting frame (usually called screw frame) 1' mounted on the end wall of the vehicle body. The locking pressure plate 3' is rotatably connected to the pressure plate support 2' by pins 4' (or pin shafts or rivets). The locking pressure plate 3' is rotated to insert into the groove 51' of the clamping frame 5', and then locked to prevent rotation by the anti-rotation pressure plate 6' (or pin) fixed to one side of the locking pressure plate 3'. The structure is relatively complex. During actual operation of the railcar, the folding canopy undergoes a series of single or combined movements such as rotation, stretching, compression, superelevation, side roll, and / or nodding. The locking pressure plate 3' bears eccentric force and is prone to... Figure 1 It broke at point A' as shown.

[0004] Additionally, the connecting frame 1' has a groove 11' for installing the sealing strip 7' at the position corresponding to the clamping frame 5'. The clamping frame 5' is pressed against the sealing strip 7' by the locking plate 3' to achieve a seal. Due to the large size of the groove 11' in the connecting frame 1', the small size of the mating part of the clamping frame 5' that is embedded in the groove 11', and the elasticity of the sealing strip 7', when the rail train passes through a curved track, the clamping force of the locking plate 3' is insufficient to completely press the clamping frame 5' into place. This causes the clamping frame 5' to move within a certain range, resulting in contact and wear between the locking plate 3' and the clamping frame 5'. Especially in the upper area of ​​the passageway, due to gravity, the locking plate 3' will press against the inner wall of the clamping frame 5', resulting in friction and more severe wear on the clamping frame 5'.

[0005] Furthermore, since the groove 51' is arranged circumferentially along the clamping frame 5', the clamping frame 5' and the connecting frame 1' are only pressed together by the locking plate 3', and the clamping frame 5' and the connecting frame 1' are easily misaligned due to the lack of mechanical positioning. Summary of the Invention

[0006] The purpose of this invention is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0007] To achieve the above objectives, according to one aspect of the present invention, a connecting device is provided for connecting a folding canopy of a passageway to a vehicle body end wall. The connecting device includes a plurality of connectors, a clamping frame configured to clamp the folding canopy, and a plurality of locking members. One end of each connector is connected to the vehicle body end wall, and the other end of each connector is provided with a connecting portion. The clamping frame is provided with a plurality of through holes distributed circumferentially thereon, and the plurality of connectors pass through the plurality of through holes in a corresponding manner to expose the connecting portion on the side of the clamping frame away from the vehicle body end wall. Each locking member is connected from the side of the clamping frame away from the vehicle body end wall to the corresponding connecting portion.

[0008] This structure mechanically connects the clamping frame to the vehicle body end wall by connecting the connector through multiple through holes in the clamping frame and locking it with a locking member, solving the problem of the lack of mechanical positioning of the clamping frame. This achieves a reliable and non-detachable connection of the clamping frame. Furthermore, the connector bears the axial and radial forces from the clamping frame, while the locking member shares some of the axial force, thus preventing the breakage of the locking plate in existing technologies. The clamping frame is also securely and reliably fixed, avoiding wear on the clamping frame as in existing technologies. After the connector passes through the through holes, the locking member connects to the connecting part from the side of the clamping frame away from the vehicle body end wall, enabling quick locking and unlocking of the clamping frame (also known as quick unlocking and unlocking of the through channel). Compared to existing technologies that use a locking plate to rotate and connect to the pressure plate support, and anti-rotation pressure plate anti-rotation schemes, this structure is simpler, reduces post-assembly work, and improves the manufacturing efficiency of the connecting device; it also saves materials, reducing the weight of a single through channel by approximately 7-8 kg, thus improving material utilization.

[0009] According to one embodiment of the present invention, each of the connectors includes a main body passing through the through hole and a connecting plate connected to the main body, the connecting plate being adapted to be connected to the vehicle body end wall, and the connecting portion being disposed at the end of the main body away from the connecting plate.

[0010] In this design, because the connector is directly attached to the vehicle body end wall, the connection device can adapt to the form of a through-channel interface without a connecting frame (often also called a screw frame). Furthermore, eliminating the connecting frame in the through-channel results in lower weight and cost, and simplifies installation. In addition, the connecting plate increases the connection area between the connector and the vehicle body end wall, thereby increasing the connection strength between the connector and the vehicle body end wall.

[0011] According to one embodiment of the present invention, the connecting device further includes a connecting frame connected to the vehicle body end wall, and the plurality of connecting members are connected to the connecting frame so as to indirectly connect the plurality of connecting members to the vehicle body end wall through the connecting frame.

[0012] This structure can indirectly connect multiple connectors to the end wall of the vehicle body through the connecting frame, so that the connecting device can be adapted to the through-passage interface form with the connecting frame, such as the CRRC unified interface with a unified through-passage interface.

[0013] According to one embodiment of the present invention, each of the connectors includes a main body portion that passes through the connecting frame and is fixed to the connecting frame, and the connection is disposed at one end of the main body portion away from the vehicle body end wall.

[0014] According to one embodiment of the present invention, the connecting frame includes a first connecting frame wall and a second connecting frame wall having a plurality of first mounting holes respectively disposed opposite to each other and having a plurality of second mounting holes. Each of the main body portions passes through the corresponding first mounting hole and the second mounting hole and is fixed on the first connecting frame wall and the second connecting frame wall.

[0015] This structure allows the main body of the connector to be connected to the first and second connecting frame walls, respectively, for example by welding, thereby increasing the connection strength between the connector and the connecting frame.

[0016] According to one embodiment of the present invention, the clamping frame includes a first clamping frame wall and a second clamping frame wall disposed opposite to each other, the first clamping frame wall being provided with the plurality of through holes, and the connecting portion being located in the clamping space between the first clamping frame wall and the second clamping frame wall.

[0017] According to one embodiment of the present invention, the connecting portion includes at least one mounting groove disposed at one end of the main body portion, and the locking member includes a retaining ring, at least a portion of which is disposed within the mounting groove.

[0018] In this design, the retaining circlip is clamped in the mounting groove and can be pre-tensioned to provide a certain clamping force and prevent loosening. The retaining circlip both bears axial force and provides anti-loosening functionality, resulting in a simplified structure for the connection device.

[0019] According to one embodiment of the present invention, the snap ring includes a snap ring body and a first snap plate and a second snap plate connected to the snap ring body to define an opening. The at least one mounting groove includes a first mounting groove and a second mounting groove disposed on both sides of the body portion. The first snap plate is disposed in the first mounting groove, and the second snap plate is disposed in the second mounting groove.

[0020] According to one embodiment of the present invention, the retaining ring further includes an abutment plate extending from the retaining ring body toward the opening. When the first and second retaining plates are positioned in the first and second mounting slots, the abutment plate is configured to abut against the outer peripheral wall of the body portion. This design effectively ensures the retaining ring is properly engaged.

[0021] According to one embodiment of the present invention, the first mounting groove has a first starting end and a first ending end through which the first snap-fit ​​plate slides sequentially when it is installed, and the second mounting groove has a second starting end and a second ending end through which the second snap-fit ​​plate slides sequentially when it is installed, and the distance between the first starting end and the second starting end is less than the distance between the first ending end and the second ending end.

[0022] This structure prevents the retaining ring from easily detaching from the connector and allows it to slide more smoothly from the end with a smaller pitch to the end with a larger pitch.

[0023] According to one embodiment of the present invention, the snap ring further includes a first protrusion and a second protrusion respectively disposed on the first snap plate and the second snap plate at the opening, the first protrusion and the second protrusion extending toward each other.

[0024] When the first and second snap-fit ​​plates are positioned in the first and second mounting slots, the structure can hold the main body tightly with the first and second protrusions to prevent the snap ring from falling off the connector.

[0025] According to one embodiment of the present invention, the locking member includes a retaining ring, and the connecting portion includes an insertion hole extending radially through the main body, a portion of the retaining ring passing through the insertion hole. In this embodiment, the use of an internal opening in the connecting member and an insertable retaining ring effectively secures the clamping frame and prevents loosening.

[0026] According to one embodiment of the present invention, the retaining ring includes a retaining ring body having an opening and a plug plate extending from the retaining ring body toward the opening. When the retaining ring body is installed to surround the outer periphery of the body portion, the plug plate is inserted into the plug hole. This embodiment achieves a clamping and anti-loosening function by opening a hole in the connector to realize the insertion and positioning of the plug plate while clamping the outer periphery of the connector by the retaining ring body.

[0027] According to one embodiment of the present invention, the outer periphery of the clamping frame is provided with a mounting portion extending circumferentially thereon, and the connecting device further includes a sealing ring mounted on the mounting portion, wherein one end of the sealing ring exposed on the mounting portion abuts against the end wall of the vehicle body.

[0028] According to another aspect of the invention, a through-passage assembly is also provided, which includes a connection device as described in the examples above.

[0029] According to another aspect of the invention, a vehicle is also provided, which includes a connecting device or through-passage assembly as described in the examples above. Attached Figure Description

[0030] The features and advantages of the present invention will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on the invention, wherein:

[0031] Figure 1 A perspective view of a prior art connection device connecting a passageway to the end wall of a vehicle body is shown.

[0032] Figure 2 An exploded view of a connection device according to a first exemplary embodiment of the present invention is shown.

[0033] Figure 3 Show Figure 2 The front view of the connecting device shown.

[0034] Figure 4 Show Figure 3 The connecting device shown is a cross-sectional view along line AA.

[0035] Figure 5 Show Figure 2 A perspective view of the connector of the connecting device shown.

[0036] Figure 6 An exploded view of the connection device according to a second exemplary embodiment of the present invention is shown.

[0037] Figure 7 Show Figure 6 The front view of the connecting device shown.

[0038] Figure 8 Show Figure 6 The connecting device shown is a cross-sectional view along line BB.

[0039] Figure 9 Show Figure 6 The connecting device shown is a cross-sectional view along line CC.

[0040] Figure 10 Show Figure 6 A partial schematic diagram showing the connection device in the unlocked state.

[0041] Figure 11 Show Figure 6 A partial schematic diagram showing the connecting device in a locked state.

[0042] Figure 12 Show Figure 6 A schematic diagram of the connector of the connecting device shown.

[0043] Figure 13 Show Figure 12 The connector shown is a cross-sectional view along line DD.

[0044] Figure 14 A schematic diagram of a connection device according to a third exemplary embodiment of the present invention is shown.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Connector; 11. Connecting part; 111. Mounting groove; 1111. First mounting groove; 11111. First starting end; 11112. First ending end; 1112. Second mounting groove; 11121. Second starting end; 11122. Second ending end; 12. Main body; 121. Insertion hole; 13. Connecting plate; 131. First connecting hole; 2. Clamping frame; 21. Through hole; 22. First clamping frame wall; 23. Second clamping frame wall; 24. Clamping 25. Holding space; 3. Mounting part; 3. Locking component; 31. Snap ring; 311. Snap ring body; 312. First snap-fit ​​plate; 313. Second snap-fit ​​plate; 314. Abutment plate; 315. First protrusion; 316. Second protrusion; 317. Insertion plate; 4. Connecting frame; 41. First connecting frame wall; 411. First mounting hole; 412. Third mounting hole; 42. Second connecting frame wall; 421. Second mounting hole; 422. Fourth mounting hole; 5. Sealing ring. Detailed Implementation

[0047] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the invention. However, it will be apparent to those skilled in the art that implementation of the invention may not include some of these specific details. Furthermore, it should be understood that the invention is not limited to the specific embodiments described. Rather, the invention can be conceived to be practiced with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0048] The terms "first" and "second" are used below to describe the elements of this application. These terms are used only to distinguish the individual elements and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open-ended inclusion and mean that there may be additional elements / components besides those listed.

[0049] Figures 2 to 5 A connecting device according to a first embodiment of the present invention is shown, which is used to connect the canopy of the through passage to the end wall of the vehicle body. Multiple mounting interfaces are spaced apart on the end face of the end wall of the vehicle body. These mounting interfaces may be mounting interfaces reserved for mounting the connecting frame 4 (also commonly referred to as a screw frame). Figure 2 and Figure 3 As shown, the connecting device according to this embodiment mainly includes multiple connectors 1, a clamping frame 2, and a locking member 3. One end of each connector 1 is connected to the mounting interface of the vehicle body end wall, and the other end of each connector 1 extends outward from the end face of the vehicle body end wall and is provided with a connecting portion 11. Multiple through holes 21 are distributed circumferentially along the clamping frame 2, so that the multiple connectors 1 extending outward from the vehicle body end wall can pass through the multiple through holes 21 one by one, and the connecting portion 11 of the connector 1 is exposed on the side of the clamping frame 2 away from the vehicle body end wall after passing through the through hole 21. The locking member 3 is connected to the connecting portion 11 from the side of the clamping frame 2 away from the vehicle body end wall (that is, the side of the clamping frame 2 corresponding to the connecting portion 11). Through the connection of the connectors 1 and the locking member 3, the clamping frame 2 is fixed to the vehicle body end wall.

[0050] This structure mechanically connects the clamping frame to the vehicle body end wall by connecting the connector through multiple through holes in the clamping frame and locking it with a locking member, solving the problem of the lack of mechanical positioning of the clamping frame. This achieves a reliable and non-detachable connection of the clamping frame. Furthermore, the connector bears the axial and radial forces from the clamping frame, while the locking member shares some of the axial force, thus preventing the breakage of the locking plate in existing technologies. The clamping frame is also securely and reliably fixed, avoiding wear on the clamping frame as in existing technologies. After the connector passes through the through holes, the locking member connects to the connecting part from the side of the clamping frame away from the vehicle body end wall, enabling quick locking and unlocking of the clamping frame (also known as quick unlocking and unlocking of the through channel). Compared to existing technologies that use a locking plate to rotate and connect to the pressure plate support, and anti-rotation pressure plate anti-rotation schemes, this structure is simpler, reduces post-assembly work, and improves the manufacturing efficiency of the connecting device; it also saves materials, reducing the weight of a single through channel by approximately 7-8 kg, thus improving material utilization.

[0051] As a specific implementation of this embodiment, such as Figure 4 and Figure 5As shown, each connector 1 may include a main body 12 and a connecting plate 13 connected to one end of the main body 12. The main body 12 has a circular cross-section, allowing it to pass through the through hole 21. The connecting plate 13 is elongated, with the main body 12 disposed in the middle of the connecting plate 13. The connecting plate 13 has first connecting holes 131 along its length and corresponding to both sides of the main body 12. Screws, such as screws, pass through the first connecting holes 131 and are threadedly connected to the vehicle body end wall, thereby fixing each connector 1 to the mounting interface of the vehicle body end wall in a one-to-one correspondence. The connecting plate 13 of the present invention can increase the contact area between the main body 12 and the vehicle body end wall, further increasing the connection strength between the connector 1 and the vehicle body end wall.

[0052] Furthermore, such as Figure 5 As shown, the main body 12 may further include a large-diameter end connected to the connecting plate 13 and a small-diameter end connected to the large-diameter end. The diameter of the large-diameter end is larger than the diameter of the through hole 21, while the diameter of the small-diameter end is slightly larger than the diameter of the through hole 21, so that when the main body 12 passes through the through hole 21, the clamping frame 2 can be abutted against the connection between the large-diameter end and the small-diameter end. When the locking member 3 is connected to the connecting member 1, the clamping frame 2 can be clamped between the large-diameter end and the locking member 3, avoiding wear caused by excessive shaking of the clamping frame 2.

[0053] In the above embodiments, since the connector 1 is directly connected to the vehicle end wall via the connecting plate 13, the connecting device can adapt to the connection type of the interface without a connecting frame. In addition, eliminating the through channel of the connecting frame results in lower weight and cost, and simpler installation and operation.

[0054] The following description, in the second embodiment, focuses on the connection device for an interface scheme with a connecting frame (e.g., a scheme using the CRRC unified interface). The CRRC unified interface referred to herein is a railcar manufactured according to the CRRC unified through-channel interface.

[0055] The connecting device according to the second embodiment of the present invention, such as Figures 6 to 9 As shown, the connecting device mainly includes a clamping frame 2, a connecting frame 4, multiple connectors 1, and multiple locking components 3. The connecting frame 4 is provided with third mounting holes 412 spaced circumferentially along its length. These third mounting holes 412 correspond to the mounting interfaces on the vehicle body end wall for the connecting frame. By threading screws through the third mounting holes 412 and connecting them to the vehicle body end wall, the connecting frame 4 can be fixed to the end wall. Thus, as... Figure 8 and Figure 9 The position of the connector 1 shown is offset from the third mounting hole 412 of the connecting frame 4, and the connector 1 is fixed to the connecting frame 4. Multiple connectors 1 can be indirectly connected to the end wall of the vehicle body through the connecting frame 4.

[0056] As a specific exemplary embodiment, each connector 1 may include, for example: Figure 8 The main body 12 shown is cylindrical and passes through the connecting frame 4 and is connected to the connecting frame 4 by welding, riveting, or bonding. A connecting part is provided at the end of the main body 12 away from the end wall of the vehicle body.

[0057] As a specific exemplary embodiment, such as Figure 8 and Figure 9 The connecting frame 4 shown may include a first connecting frame wall 41 and a second connecting frame wall 42 arranged opposite to each other. The first connecting frame wall 41 has a plurality of first mounting holes 411 spaced apart, and the second connecting frame wall 42 has a plurality of second mounting holes 421 corresponding one-to-one with the plurality of first mounting holes 411. Each main body portion 12 passing through the corresponding first mounting holes 411 and second mounting holes 421 is simultaneously fixed to the first connecting frame wall 41 and the second connecting frame wall 42, for example, by welding. The first connecting frame wall 41 and the second connecting frame wall 42 form a closed frame structure. By simultaneously supporting each main body portion 12 through the first connecting frame wall 41 and the second connecting frame wall 42, the connection strength between the main body portion 12 and the connecting frame 4 can be increased. The connecting portion protrudes from the side of the second connecting frame wall 42 away from the first connecting frame wall 41, so as to pass through the clamping frame 2 and connect the locking member 3 when the clamping frame 2 is attached to the connecting frame 4. Figure 9 As shown, at the connection between the connecting frame 4 and the end wall of the vehicle body, the second connecting frame wall 42 is also provided with a fourth mounting hole 422 corresponding to the third mounting hole 412, so that when the screw is passed through the fourth mounting hole 422 and placed in the third mounting hole 412, the installation tool (such as a screwdriver) can apply torque to the screw through the fourth mounting hole 422.

[0058] In the first and second embodiments described above, as Figure 4 and Figure 8 As shown, the clamping frame 2 mainly includes a first clamping frame wall 22 and a second clamping frame wall 23 arranged opposite to each other, and a clamping space 24 is formed between the first clamping frame wall 22 and the second clamping frame wall 23. The first clamping frame wall 22 can fit with the connecting frame 4 and is provided with a plurality of through holes 21. After the connecting parts 11 of the plurality of connectors 1 pass through the plurality of through holes 21 one by one, they are placed in the clamping space 24. The plurality of locking parts 3 are inserted outward from the side of the clamping frame 2 near the center and connected to the corresponding connecting parts 11.

[0059] To achieve a seal between the through passage and the vehicle body end wall, the clamping frame 2 may further include a mounting portion 25 disposed along its outer periphery and extending circumferentially therein. The mounting portion 25 has an opening on the side near the vehicle body end wall, and the connecting device may further include a sealing ring 5 mounted on the mounting portion 25. For example, viewed from the cross-section of the sealing ring 5, as... Figure 4 and Figure 8As shown, the sealing ring 5 includes a snap-fit ​​portion and two elastic tail ends connected to one side of the snap-fit ​​portion. The snap-fit ​​portion is disposed within the mounting portion 25 and snaps into the opening of the mounting portion 25 using its own elasticity. The length of the two tail ends is slightly longer than the distance between the opening of the mounting portion 25 and the end wall of the vehicle body. When the clamping frame 2 is as shown... Figure 4 As shown, it can be directly installed on the end wall of the vehicle body via connector 1 or as... Figure 8 When the device is indirectly installed on the end wall of the vehicle body via the connecting frame 4, the tail end can be slightly bent and elastically abut against the end wall of the vehicle body, so that the elasticity of the sealing ring 5 itself can enhance its sealing performance with the end wall of the vehicle body.

[0060] In the first and second embodiments described above, the connection between the connecting portion 11 of the connector 1 and the locking member 3 can be achieved using a shaft-end retaining spring, with the locking member 3 configured as a retaining spring 31. The connection between the connecting portion 11 and the retaining spring 31 can be achieved by an external slot in the main body 12, with the retaining spring 31 elastically engaging from the outside, such as... Figure 4 , 5 10, 11 and Figure 12 As shown, the connecting portion 11 includes at least one mounting groove 111 disposed at one end of the main body portion 12. This mounting groove 111 can be two mounting grooves 111 symmetrically arranged on both sides of the main body portion 12. The retaining ring 31 can extend into the clamping space 24 so that at least a portion of it is disposed within the mounting groove 111, thereby preventing the connecting portion 11 from slipping out of the through hole 21. Although Figure 10 and Figure 11 The connection structure of the snap ring 31 and the connecting part has been described using the second embodiment, which includes the connecting frame, as an example. However, this connection structure is also applicable to the connection of connecting parts and locking members in the first embodiment and other structures.

[0061] Specifically, the retaining ring 31 mainly includes a retaining ring body 311, a first retaining plate 312 and a second retaining plate 313 respectively connected to the retaining ring body 311, wherein the first retaining plate 312 and the second retaining plate 313 are arranged opposite to each other to define an opening. Correspondingly, at least one mounting groove 111 includes a first mounting groove 1111 and a second mounting groove 1112 arranged opposite to each other on both sides of the main body portion 12. This allows at least a portion of the retaining ring 31 to be inserted into the clamping space 24, at least a portion of the first retaining plate 312 to be inserted into the first mounting groove 1111, and at least a portion of the second retaining plate 313 to be inserted into the second mounting groove 1112.

[0062] Further reference Figure 12 and Figure 13 The first mounting groove 1111 has a first starting end 11111 through which the first snap-fit ​​plate 312 slides sequentially. Figure 13 The lower end of the first mounting groove 1111 shown) and the first end 11112 ( Figure 13The upper end of the first mounting groove 1111 shown), the second mounting groove 1112 has a second starting end 11121 through which the second snap-fit ​​plate 313 sequentially slides. Figure 13 The lower end of the second mounting groove 1112 shown) and the second end 11122 ( Figure 13 The upper end of the second mounting slot 1112 shown is made of Figure 13 It can be seen that the distance between the first starting end 11111 and the second starting end 11121 is smaller than the distance between the first end 11112 and the second end 11122, so that the bottom of the first mounting groove 1111 and the bottom of the second mounting groove 1112 form an angle greater than 10°, so that the first snap-fit ​​plate 312 and the second snap-fit ​​plate 313 can slide more smoothly from the end with a smaller distance to the end with a larger distance.

[0063] According to a further exemplary embodiment of this invention, in order to prevent the first snap-fit ​​plate 312 and the second snap-fit ​​plate 313 from falling off from the first mounting groove 1111 and the second mounting groove 1112 respectively, as follows: Figure 10 and Figure 11 As shown, the retaining ring 31 may further include a first protrusion 315 and a second protrusion 316 extending toward each other. The first protrusion 315 is disposed at the end of the first retaining plate 312 away from the retaining ring body 311, and the second protrusion 316 is disposed at the end of the second retaining plate 313 away from the retaining ring body 311. The first protrusion 315 and the second protrusion 316 can reduce the distance between the first retaining plate 312 and the second retaining plate 313. When the first retaining plate 312 and the second retaining plate 313 are respectively located in the first mounting groove 1111 and the second mounting groove 1112, the first protrusion 315 extends outward from the outer side of the first end 11112 of the first mounting groove 1111, and the second protrusion 316 extends outward from the outer side of the second end 11122 of the second mounting groove 1112. Thus, the first protrusion 315 and the second protrusion 316 can clamp the portion of the body portion 12 corresponding to the portion between the first mounting groove 1111 and the second mounting groove 1112.

[0064] In further embodiments, reference continues to be made to... Figure 10 and Figure 11 In order to quickly and accurately determine whether the retaining ring 31 is inserted in place, the retaining ring 31 may also include an abutment plate 314 extending from the retaining ring body 311 toward the opening. The abutment plate 314 is disposed between the first retaining plate 312 and the second retaining plate 313, and can abut against the outer peripheral wall of the body portion 12 when the first retaining plate 312 and the second retaining plate 313 are respectively located in the first mounting groove 1111 and the second mounting groove 1112, thereby determining whether the retaining ring 31 is engaged in place.

[0065] According to another exemplary embodiment of the connection method between the connecting part 11 and the locking member 3, the connection between the connecting part 11 and the retaining ring 31 can be achieved by using an opening in the main body 12 and an insertable retaining ring. This method is suitable for situations such as... Figure 14 As can be seen in the third embodiment shown, the connecting portion 11 of the connector 1 includes a insertion hole 121 that penetrates the main body 12 radially. The snap ring 31 includes a snap ring body 311 with an opening and an insertion plate 317 extending from the snap ring body 311 toward the opening. The snap ring body 311 has an annular structure or protrusions at both ends, so that the snap ring body 311 can grip the outer peripheral wall of the main body 12, preferably with the inner side of the snap ring body 311 abutting against the outer peripheral wall of the main body 12. When the snap ring body 311 surrounds the outer periphery of the main body 12, the insertion plate 317 is disposed in the insertion hole 121. Thus, the axial relative position of the main body 12 of the connector 1 and the clamping frame 2 is defined by the cooperation of the insertion plate 317 and the insertion hole 121, and the snap ring body 311 abutting against the clamping frame at the outer periphery of the main body, together preventing the main body 12 from disengaging from the through hole 21. In some other specific embodiments, such as Figure 10 The snap ring 31 shown can also be inserted through the insertion hole 121 and positioned in the insertion hole 121 by the elastic opening of the first snap plate 312 and the second snap plate 313, thereby realizing the connection and positioning of the clamping frame.

[0066] This invention also provides a through-passage assembly including the aforementioned connecting device and a folding canopy connected by the connecting device, as well as a railcar including the aforementioned connecting device or through-passage assembly. When the through-passage assembly connects two adjacent cars via the connecting device, the clamping frame achieves a reliable mechanical connection through the connecting member 1, and can withstand the axial and radial forces transmitted from the clamping frame 2 through the connecting member 1. The locking member 3 not only withstands axial force but also has an anti-loosening function. This through-passage assembly achieves the function of quick locking and opening of the clamping frame to the end wall of the car body with a simple structure. The connection is firm, saves materials, and a single through-passage assembly can, for example, reduce weight by 7 to 8 kg, improving material utilization, reducing subsequent assembly work, and improving finished product manufacturing efficiency.

[0067] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art based on the practice of the invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A connecting device for connecting a canopy of a passageway to an end wall of a vehicle body, characterized in that, The connecting device includes: Multiple connectors (1), one end of each connector (1) is connected to the end wall of the vehicle body, and the other end of each connector (1) is provided with a connecting part (11); A clamping frame (2) configured to clamp the folding canopy, the clamping frame (2) having a plurality of through holes (21) distributed circumferentially thereon, a plurality of connectors (1) passing through the plurality of through holes (21) in a corresponding manner to expose the connector (11) on the side of the clamping frame (2) away from the end wall of the vehicle body; and Multiple locking elements (3), each of the locking elements (3) is connected to the corresponding connecting part (11) by the clamping frame (2) on the side away from the vehicle body end wall; the connecting part (11) includes at least one mounting groove (111) disposed at one end of the main body part (12) of the connecting element (1), and the locking element (3) includes a retaining ring (31), at least a portion of which is disposed in the mounting groove (111). The snap ring (31) includes a snap ring body (311) and a first snap plate (312) and a second snap plate (313) connected to the snap ring body (311) to define an opening. The at least one mounting groove (111) includes a first mounting groove (1111) and a second mounting groove (1112) disposed on both sides of the body portion. The first snap plate (312) is disposed in the first mounting groove (1111), and the second snap plate (313) is disposed in the second mounting groove (1112).

2. The connecting device according to claim 1, characterized in that, Each of the connectors (1) includes a main body (12) passing through the through hole (21) and a connecting plate (13) connected to the main body (12), the connecting plate (13) being adapted to be connected to the vehicle body end wall, and the connecting part (11) being disposed at one end of the main body (12) away from the connecting plate (13).

3. The connecting device according to claim 1, characterized in that, The connecting device further includes a connecting frame (4) connected to the end wall of the vehicle body, and the plurality of connecting pieces (1) are connected to the connecting frame (4) so ​​as to indirectly connect the plurality of connecting pieces (1) to the end wall of the vehicle body through the connecting frame (4).

4. The connecting device according to claim 3, characterized in that, Each of the connectors (1) includes a main body (12) that passes through the connecting frame (4) and is fixed to the connecting frame (4), and the connecting part (11) is disposed at one end of the main body (12) away from the vehicle body end wall.

5. The connecting device according to claim 4, characterized in that, The connecting frame (4) includes a first connecting frame wall (41) and a second connecting frame wall (42) having a plurality of first mounting holes (411) respectively arranged opposite to each other. Each main body (12) passes through the corresponding first mounting hole (411) and second mounting hole (421) and is fixed on the first connecting frame wall (41) and the second connecting frame wall (42).

6. The connecting device according to claim 1, characterized in that, The clamping frame (2) includes a first clamping frame wall (22) and a second clamping frame wall (23) disposed opposite to each other. The first clamping frame wall (22) is provided with the plurality of through holes (21). The connecting part (11) is located in the clamping space (24) between the first clamping frame wall (22) and the second clamping frame wall (23).

7. The connecting device according to claim 2, characterized in that, The snap ring (31) also includes an abutment plate (314) extending from the snap ring body (311) toward the opening, wherein when the first abutment plate (312) and the second abutment plate (313) are in place in the first mounting groove (1111) and the second mounting groove (1112), the abutment plate (314) is configured to abut against the outer peripheral wall of the body portion (12).

8. The connecting device according to claim 2, characterized in that, The first mounting groove (1111) has a first starting end (11111) and a first ending end (11112) through which the first snap-fit ​​plate (312) slides in sequence when it is installed. The second mounting groove (1112) has a second starting end (11121) and a second ending end (11122) through which the second snap-fit ​​plate (313) slides in sequence when it is installed. The distance between the first starting end (11111) and the second starting end (11121) is less than the distance between the first ending end (11112) and the second ending end (11122).

9. The connecting device according to claim 2, characterized in that, The snap ring (31) further includes a first protrusion (315) and a second protrusion (316) respectively disposed on the first snap plate (312) and the second snap plate (313) at the opening, the first protrusion (315) and the second protrusion (316) extending toward each other.

10. The connecting device according to any one of claims 1-9, characterized in that, The clamping frame (2) is provided with a mounting part (25) extending circumferentially along its outer periphery. The connecting device also includes a sealing ring (5) installed on the mounting part. One end of the sealing ring (5) exposed on the mounting part (25) abuts against the end wall of the vehicle body.

11. A connecting device for connecting a canopy of a passageway to an end wall of a vehicle body, characterized in that, The connecting device includes: Multiple connectors (1), one end of each connector (1) is connected to the end wall of the vehicle body, and the other end of each connector (1) is provided with a connecting part (11); A clamping frame (2) configured to clamp the folding canopy, the clamping frame (2) having a plurality of through holes (21) distributed circumferentially thereon, a plurality of connectors (1) passing through the plurality of through holes (21) in a corresponding manner to expose the connector (11) on the side of the clamping frame (2) away from the end wall of the vehicle body; and Multiple locking elements (3), each of the locking elements (3) is connected to the corresponding connecting portion (11) from the side of the clamping frame (2) away from the end wall of the vehicle body; the locking element (3) includes a retaining ring (31), the connecting portion (11) includes a insertion hole (121) that penetrates the main body portion (12) radially along the main body portion (12) of the connecting element (1), a portion of the retaining ring (31) passes through the insertion hole (121).

12. The connecting device according to claim 11, characterized in that, The snap ring (31) includes a snap ring body (311) having an opening and a plug plate (317) extending from the snap ring body (311) toward the opening. When the snap ring body (311) is mounted to surround the outer periphery of the body portion (12), the plug plate (317) is inserted into the plug hole (121).

13. The connecting device according to claim 11 or 12, characterized in that, The clamping frame (2) is provided with a mounting part (25) extending circumferentially along its outer periphery. The connecting device also includes a sealing ring (5) installed on the mounting part. One end of the sealing ring (5) exposed on the mounting part (25) abuts against the end wall of the vehicle body.

14. The connecting device according to claim 11 or 12, characterized in that, Each of the connectors (1) includes a main body (12) passing through the through hole (21) and a connecting plate (13) connected to the main body (12), the connecting plate (13) being adapted to be connected to the vehicle body end wall, and the connecting part (11) being disposed at one end of the main body (12) away from the connecting plate (13).

15. The connecting device according to claim 11, characterized in that, The connecting device further includes a connecting frame (4) connected to the end wall of the vehicle body, and the plurality of connecting pieces (1) are connected to the connecting frame (4) so ​​as to indirectly connect the plurality of connecting pieces (1) to the end wall of the vehicle body through the connecting frame (4).

16. The connecting device according to claim 15, characterized in that, Each of the connectors (1) includes a main body (12) that passes through the connecting frame (4) and is fixed to the connecting frame (4), and the connecting part (11) is disposed at one end of the main body (12) away from the vehicle body end wall.

17. The connecting device according to claim 16, characterized in that, The connecting frame (4) includes a first connecting frame wall (41) and a second connecting frame wall (42) having a plurality of first mounting holes (411) respectively arranged opposite to each other. Each main body (12) passes through the corresponding first mounting hole (411) and second mounting hole (421) and is fixed on the first connecting frame wall (41) and the second connecting frame wall (42).

18. The connecting device according to claim 11, characterized in that, The clamping frame (2) includes a first clamping frame wall (22) and a second clamping frame wall (23) disposed opposite to each other. The first clamping frame wall (22) is provided with the plurality of through holes (21). The connecting part (11) is located in the clamping space (24) between the first clamping frame wall (22) and the second clamping frame wall (23).

19. A through-passage assembly, characterized in that, It includes a canopy and a connecting device according to any one of claims 1 to 18 for connecting the canopy of the passageway to the end wall of the vehicle body.

20. A vehicle, characterized in that, Includes the connecting device according to any one of claims 1 to 18 or the through-channel assembly according to claim 19.

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